I'm having the same issue on my BlackBerry Key2. I've used the same SIM for my past few devices and even when using it on my current device the native vvm worked. I accidentally toggled visual voicemail off in the phone app settings back around June and since then cannot get it to enable. It's so frustrating. The tmobile app is slow and I don't want to open another app just to check voicemail. Should all be done right from the phone app. I liked mobile when I first switch a few years ago from Verizon, but they seem to be slowly disabling features. Wi-Fi calling stopped and not vvm. ( wifi calling worked perfect on my key2 out of the box, then future updates disabled it).
Already have an account? Login
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.
Sorry, we're still checking this file's contents to make sure it's safe to download. Please try again in a few minutes.
Sorry, our virus scanner detected that this file isn't safe to download.